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Effet du taux molaire des ions opposés par rapport aux agents tensio-actifs cationiques sur les caractéristiques de réduction des traînées de coulis d'hydrates de triméthyloléthane traités par des agents tensio-actifs.

Effect of molar ratio of counter-ions to cationic surfactants on drag reduction characteristics of trimethylolethane hydrate slurries.

Auteurs : SUZUKI H., TATEISHI S., KOMODA Y.

Type d'article : Article, Article de la RIF

Résumé

An experimental study on flow characteristics of trimethylolethane (TME) hydrate slurries treated with drag-reducing surfactants has been performed in order to investigate the effect of molar ratio of counter-ions to surfactants. As drag-reducing surfactants, oleylbishydroxyethylmethylammonium chloride was used. The molar ratio of counter-ions of sodium salicylate to surfactants ranged from 0 to 100 and surfactant concentration was changed in two steps; 1000 ppm and 2.000 ppm while the concentration of TME in water was set constant at 25 wt%. From the results, it was found that the drag reduction limitation becomes larger when the molar ratio of the counter-ions to surfactants is set around 20 for each surfactant concentration. From the detailed discussions, the drag reduction characteristics in a higher range of the molar ratio of counter-ions to surfactants were found to relate to the molar ratio of counter-ions to TME more significantly. Under the present conditions, it was concluded that 0.05 of the molar ratio of counter-ions to TME shows the most effective drag reduction.

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Pages : pp. 1632-1638

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Détails

  • Titre original : Effect of molar ratio of counter-ions to cationic surfactants on drag reduction characteristics of trimethylolethane hydrate slurries.
  • Identifiant de la fiche : 2010-1901
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 8
  • Date d'édition : 12/2010

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